Experience

Owner · Freelance IT Consultant Current

Jan 2026 – Present

Arnold Ruijter IT · Castricum

Independent IT consultancy providing enterprise and domain architecture, integration architecture, IT leadership, and IT strategy services.
Operating across sectors — from retail and fashion to public sector — at the scale and level that adds most value.

Current Assignment

Interim IT Manager Current

Jul 2026 – Present

Nationaal Warmtefonds · Hilversum

Via Arnold Ruijter IT · Semi-public sector

Setting up and organizing the IT team — from separate islands into one group, with transparency across its activities.
Implementing and improving IT processes and procedures to manage support and business needs.
Building a strong, future-proof foundation.
Acting as IT stakeholder for a new ERP platform and its orchestration layer.
Managing vendors and contracts.
Overseeing audit activities.

Current Assignment

Interim IT Consultant · Project Leader ESB Tender Current

Mar 2026 – Present

GR IJsselgemeenten · Capelle aan den IJssel

Via Arnold Ruijter IT · Public sector · South Holland

Leading the European public procurement process (EU aanbesteding) for an Enterprise Service Bus on behalf of GR IJsselgemeenten — a cooperation of municipalities in the South Holland region.
Authoring core procurement documents: Startnotitie, Aanbestedingsstrategie, and Programma van Eisen (PvE).
Conducting market consultation to validate requirements and understand the vendor landscape.
Managing the formal tender procedure via TenderNed, including publication and Nota van Inlichtingen (Q&A rounds with suppliers).
Evaluating proposals against defined award criteria and preparing the Gunningsadvies (award recommendation).
Coordinating with legal, IT, and management stakeholders across the participating municipalities throughout the process.

EMEA Tech Director

Sep 2024 – Nov 2025

New Balance Europe BV · Amsterdam

Responsible for Enterprise Architecture within EMEA and alignment with global IT governance.
Developing target architecture for ERP migration, data foundations, and integrations.
Co-owner of BI Governance program: promoting data quality, governance, and data-driven decision-making.
Leading European transformation initiatives, including onboarding new countries and rationalizing IT landscapes.
Stakeholder management with global teams in Boston and delivery teams in Pune.

Director IT Transformation

Nov 2020 – Aug 2024

Karl Lagerfeld Europe BV · Amsterdam

Responsible for overall IT strategy, Enterprise Architecture, and annual roadmap.
Built a broad IT organization (5 → 25+ FTE) across ERP, BI, security, eCom, infrastructure, and integration.
Migrated to modern cloud and SaaS platforms: OKTA, Boomi, Meraki, OneStream, Infor PLM, Akeneo PIM, AuditBoard.
60% fewer support issues through network and retail platform modernization.
Prepared ERP migration to Infor CloudSuite; improved omnichannel and integrations.

Owner (Freelance)

May 2019 – Oct 2020

Ruijter ElaborIT · Castricum

IT and enterprise architecture advice for retail and fashion clients (including Crocs, McGregor).
Development of target architectures and standardized business processes.
Working on EDI, data quality, middleware, eCom (Shopify), and ERP (SAP).
Coordination between European and US IT teams, including harmonisation of data and integration strategy.

PVH Europe BV · Amsterdam

Apr 2007 – Apr 2019 · 12 years

Sr. Manager ERP Development & Integration

Jan 2016 – Apr 2019

Led SAP ERP and integration teams (AFS/FMS, HANA, PI/PO, Gateway, FIORI, Sterling).
Architecture and governance around ERP migration from AFS to FMS.
Strengthened OmniChannel, API/Microservices, PIM, and BI capabilities.
Active role in SOX compliance and alignment with internal/external auditors.

Manager ICT Integration

Apr 2013 – Dec 2015

Responsible for integration architecture across multiple brands (Calvin Klein, Tommy Hilfiger).
Modernized legacy integration landscape; migrated from Sterling to SAP PI.
Designed middleware, EDI, B2B, and EAI solutions for supply chain, retail, and finance.

Team Lead Integration

Apr 2007 – Mar 2013

Supported integration of Calvin Klein and Tommy Hilfiger systems, including migration from AS400 to SAP.
Design of middleware interfaces and integration standards for scalability and efficiency.
Onboarded Japanese operations and supported concession and consignment models.

Business Systems Analyst Integration

Sep 2005 – Mar 2007

Tommy Hilfiger Europe BV · Amsterdam

Developed and maintained SAP interfaces using Gentran Sterling; supported B2B and EAI integrations.
Led eInvoicing projects and external system integrations; modeled processes and improved infrastructure.

Data Manager & EDI Coordinator

2002 – 2005

Vomar Voordeelmarkt · Alkmaar

Managed retail system data, article creation, and supplier information; supported store operations and reporting.
Contributed to EDI implementation and warehouse logistics system rollout.

Technology Experience